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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Brassicaceae (Cruciferae)||View Description||Dichotomous Key|
|Genus: Arabis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Arabis pycnocarpa M. Hopkins var. pycnocarpa
Habit: Biennial or weak perennial herb; caudex branched or not; hairs simple and short-stalked forked, coarse, spreading. Stem: 1--several, simple or branched distally, erect, 1--8 dm. Leaf: basal short-petioled, 2--10 cm, oblong to obovate or spoon-shaped, entire to dentate; cauline (7)10--45(61), ovate to oblong or lanceolate, sagittate or lobed at base. Flower: sepals 2--4 mm; petals 3.5--5(5.5) mm, 1--2(2.5) mm wide, white. Fruit: (3.5)4--6 cm, 0.8--1(1.2) mm wide; style (0.2)0.5--1 mm; pedicel 0.5--1.5 cm, glabrous to sparsely hairy. Seed: (54)60--86, oblong or +- round; wing to 0.2 mm, continuous. Chromosomes: 2n=32.
Ecology: Gravelly soils, swales, disturbed sites, meadows, shady slopes, occasionally moist; Elevation: < 2500 m. Bioregional Distribution: KR, NCoRO, CaR, SN, SnBr, W&I; Distribution Outside California: Canada, United States except Alaska, Hawaii. Flowering Time: Mar--Jul Note: Other variety in Ontario, central United States.
Synonyms: Arabis hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange
Previous taxon: Arabis oregana
Next taxon: Armoracia
Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Arabis pycnocarpa var. pycnocarpa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=71338, accessed on July 23, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 23, 2016.